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Albinaria
''Albinaria'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Clausiliidae, the door snails.
== Ecology and Life Cycle〔Schilthuizen, M., 1994. Differentiation and Hybridisation in a Polytypic Snail. PhD Thesis, Leiden University.〕 ==
The snails live on limestone rocks, where they feed on algae and lichen. They are active only during the wet season, that is, in Mediterranean lowlands, from November through April. Eggs are laid shortly after the beginning of the wet season. The development from a juvenile to a fully grown shell takes two to three wet seasons. During the intermittent dry seasons, the snails, young and adults alike, aestivate ("the warm weather equivalent of hibernation"〔Gould, S.J., 1985. The Flamingo's Smile; Reflections in Natural History. Norton, New York〕) on the rocks or in crevices inside the rocks. For aestivation, aggregates are often formed, sometimes reaching sizes of many hundreds of individuals. During the last dry season prior to sexual maturation, the subadult snail (the shell of which is already fully developed, albeit thinner than that of an adult) increases the size of its genital organs. Copulation then takes place during the first weeks of autumn rains. Population densities can sometimes be very high, in spite of heavy predation by beetle larvae of the genus ''Drilus''. These insects attack the snails during their aestivation, by perforating the shell and eating the snail inside.〔(Baalbergen, E., R. Helwerda, R. Schelfhorst, R.F.Castillo Cajas, C.H.M. van Moorsel, R. Kundrata, F.W. Welter-Schultes, S. Giokas & M. Schilthuizen, 2014. Predator-prey interactions between shell-boring beetle larvae and rock-dwelling land snails. PLoS ONE, 9(6): e100366 )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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